Nathan hats



@uitrit tst @anni @ffice NATHAN HAYS, WILLIAM DUNCAN, AND E. VH. BOWEN, OF VINTON, IOWA.

Letters Patent lio. 72,491, dated December 24, 1867.

IMPROVEMENT INy TOOLS I-OR SHARPENING HORSE-SHOE OALKS.

TO ALL WHOM IT MAY CONOERN:

Be it known that we, NATHAN Huys, WILLIAM DUNCAN, and E. H. BoWEN, of Vinton, in the county of Benton, and State of Iowa, have invented a new and improved Tool for Sharpening Horse-Shoe -Calksg and we do hereby declare that the following \isa full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same,referencebeing had to the accompanying drawings, forming part of this specification, in which- Figure 1 represents our invention as applied to the shoe for sharpening a calk.

Figure 2, a different view of the tool. v

Similar letters of reference indicate like parts.

This invention relates to an improved tool for sharpening the calks on horse-shoes, and consists in the combination of a hand-lever clamp, sind a circular rasp or cutter, operated with a crank, by which the calks onv a. horse-shoe are rapidly and eifectually sharpened on the horses foot, by a blacksmith, when held in the same manner as for shoeing a horse, without removing the shoe from the horse. By this tool, the work of sharpening calks can be performed faster and better by one man than by four men in' the usual way.

A is a hand-lever clamp, the jaw a of which is corrugated on the inside, and bent to fit and .hold on the outside of the call: on a horse-shoe, supported by a broad sharp-edged dog, B, that is pivoted on the lever at the back part of the bend forming the jaw a, and bears upon the foot or shoe of the hor'se, when the jaw is applied to the calk, to hold it firmly Vagainst it, as shown in g. 1. C is a straight lever` that is forked at one end to straddle thejaw a, to which it is pivoted. The ends of the forks 6 b of the lever C are made with cavities or hooks, facing the corrugated inside of the jaw, for receiving, as journals, tha shaft c c of a rotary cutter, d, on either end of `which .is tted a crank, e, for operating it.

The operation of this tool is as follows: The foot of the horse is taken up in the same manner as for shoeing, and the jaw ais placed onthe outside of the calk, either on the heel o r toe, with the dog B resting on the shoe, or the bottom of the foot, behind the oalk, to serve as a fulcrum for' the lever A, which is grasped with the left hand. uThe cutter d is placed in the forks of the straight lever C, and both levers are grasped 'with the left hand, bearing the teeth of the cutter up against the inside of the calk. The cutter is then rotated by the crank e, to tile or rasp the calk to a point, and sharpen it. This is an easy and quick operation.

Having described our invention, we claim as new, and desire to secure by Letters Patent The combination of the lever A with the jaw a, the pivoted dog B, the forked lever C, and the rotary cutter cZ, constructed, arranged, and operating substantially as and for the purpose described. The above specification of our invention signed by us, this 22d day of March, 1867.

NATHAN HAYS,

I WILLIAM DUN CAN, Witnesses: E. H. BOWEN. A. II'YMAN, i

E. EVANS. 

